import auth from '@/plugins/auth'
import router, { constantRoutes, dynamicRoutes } from '@/router'
import { getRouters } from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'

// 匹配views里面所有的.vue文件
const modules = import.meta.glob('./../../views/**/*.vue')

const usePermissionStore = defineStore('permission', {
  state: () => ({
    routes: [],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [],
    sidebarRouters: [],
    defaultRoutePath: '' // 默认路由路径，用于登录成功后自动跳转
  }),
  actions: {
    setRoutes(routes) {
      this.addRoutes = routes
      this.routes = constantRoutes.concat(routes)
    },
    setDefaultRoutes(routes) {
      this.defaultRoutes = constantRoutes.concat(routes)
    },
    setTopbarRoutes(routes) {
      this.topbarRouters = routes
    },
    setSidebarRouters(routes) {
      this.sidebarRouters = routes
    },
    setDefaultRoutePath(path) {
      this.defaultRoutePath = path
    },
    generateRoutes(roles) {
      return new Promise(resolve => {
        // 向后端请求路由数据
        getRouters().then(res => {
          const sdata = JSON.parse(JSON.stringify(res.data))
          const rdata = JSON.parse(JSON.stringify(res.data))
          const defaultData = JSON.parse(JSON.stringify(res.data))
          const sidebarRoutes = filterAsyncRouter(sdata)
          const rewriteRoutes = filterAsyncRouter(rdata, false, true)
          const defaultRoutes = filterAsyncRouter(defaultData)
          const asyncRoutes = filterDynamicRoutes(dynamicRoutes)
          asyncRoutes.forEach(route => {
            router.addRoute(route)
          })
          this.setRoutes(rewriteRoutes)
          this.setSidebarRouters(constantRoutes.concat(sidebarRoutes))
          this.setDefaultRoutes(sidebarRoutes)
          this.setTopbarRoutes(defaultRoutes)

          // 设置默认路由路径 - 获取第一个可访问的路由作为默认路由
          const firstAvailableRoute = this.getFirstAvailableRoute(sidebarRoutes)
          if (firstAvailableRoute) {
            this.setDefaultRoutePath(firstAvailableRoute)
          }

          resolve(rewriteRoutes)
        })
      })
    },
    // 获取第一个可访问的路由路径
    getFirstAvailableRoute(routes, parentPath = '') {
      for (const route of routes) {
        // 跳过隐藏的路由
        if (route.hidden) continue

        // 构建当前路由的完整路径
        let currentPath = route.path
        if (parentPath && !currentPath.startsWith('/')) {
          currentPath = `${parentPath}/${currentPath}`
        } else if (!currentPath.startsWith('/')) {
          currentPath = `/${currentPath}`
        }

        // 如果有子路由，递归查找
        if (route.children && route.children.length > 0) {
          const childRoute = this.getFirstAvailableRoute(route.children, currentPath)
          if (childRoute) return childRoute
        }

        // 如果路由有path且不是重定向路由，返回该路径
        if (route.path && route.path !== '/' && !route.redirect) {
          return currentPath
        }
      }
      return null
    }
  }
})

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.children) {
      route.children = filterChildren(route.children)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else if (route.component === 'InnerLink') {
        route.component = InnerLink
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  let children = []
  childrenMap.forEach(el => {
    el.path = lastRouter ? lastRouter.path + '/' + el.path : el.path
    if (el.children && el.children.length && el.component === 'ParentView') {
      children = children.concat(filterChildren(el.children, el))
    } else {
      children.push(el)
    }
  })
  return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res = []
  routes.forEach(route => {
    if (route.permissions) {
      if (auth.hasPermiOr(route.permissions)) {
        res.push(route)
      }
    } else if (route.roles) {
      if (auth.hasRoleOr(route.roles)) {
        res.push(route)
      }
    }
  })
  return res
}

export const loadView = view => {
  let res
  for (const path in modules) {
    const dir = path.split('views/')[1].split('.vue')[0]
    if (dir === view) {
      res = () => modules[path]()
    }
  }
  return res
}

export default usePermissionStore
